<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>.列表排序</title>
    <!-- 引用开发版 -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
    <!--
    
     -->
    <!-- 准备一个容器 -->
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyword" />
        <button @click="sortType=2">年龄升序</button>
        <button @click="sortType=1">年龄降序</button>
        <button @click="sortType=0">原顺序</button>
        <ul>
            <!-- in可以换成of -->
            <li v-for="(p,index) in filPersons" :key="p.id">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>

    <script type="text/javascript">
        Vue.config.productionTip = false
        const vm = new Vue({
            el: '#root',
            data: {
                keyword: '',
                sortType:0, // 0-原顺序，1-降序，2-升序
                persons: [
                    { id: '0001', name: '马冬梅', age: 34, sex: '女' },
                    { id: '0002', name: '周冬雨', age: 31, sex: '女' },
                    { id: '0003', name: '周杰伦', age: 35, sex: '男' },
                    { id: '0004', name: '温兆伦', age: 32, sex: '男' },
                ],
            },
            computed: {
                filPersons() {
                    const arr = this.persons.filter((p)=> {
                        return p.name.indexOf(this.keyword) > -1
                    })
                    if (this.sortType != 0) {
                        arr.sort((p1, p2) => {
                            return this.sortType == 1 ? p2.age-p1.age : p1.age-p2.age
                        })
                    }
                    return arr
                }
            }
        })
    </script>
</body>

</html